Thirds to rufus



(No Model.)

W. 0. B. HUMMEL.

SAW SWAGE. No. 324,701. Patented Aug. l8, l885.

WITNESSES: INVENTOR w m, v BY w ATTORNEYS.

\VILLIAM O. B. HUMMEL, OF XVINFIELD, WEST VIRGINIA, ASSIGNOR OF TWO- TI'IIRDS TO RUFUS SIVITZER AND L. A. CHRISTI, OF SAME PLACE.

SAW-SWAG E.

SPECIFICATION forming part of Letters Patent No. 324,701, dated August 18, .1885.

(No model.)

I 0 aZZ whom it may concern:

Be it known that I,WILLIAM O. B. HUMMEL, a citizen of the United States, residing at Winfield, in the county of Putnam and State of WVest Virginia, have invented certain new and useful Improvements in Saw-Swages, of which the following is a description.

This invention relates to that class of devices which are used for upsetting the points of saw-teeth to broaden the points; and its object is to guide the swage used for that purpose relatively to the plane of the saw, so that the action of the swage shall not tend to cant the tooth to either side, and to facilitate the operation, so that the swage may be iustantly placed properly on the tooth without special care on the part of the operator.

To this end my invention consists'iu the construction and combination of parts forming a saw-swage, hereinafter described and claimed, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of my invention, part broken away to show the interior, and Fig. 2 is a front elevation of the same.

A represents a swage, consisting of a bar of steel having two notches, a. c, in one end, of a form suitable to swage or spread the end of the sawtooth as required, by hammer blows applied on the head end I).

B is a plate, secured to the swage by two screw-bolts,O and D. The bolt Gis a pivot on which the swage may turn to be set at different angles relative to a fixed stud, E. The bolt D-passes through a slot, 0. in the plate B to secure the swage at the desired angle. The slot 0 is the arc of a circle concentric with the plvot bolt C.

F G H are thumb-screws passing through the plate B, to test their ends against the face of the saw as a guide to set and keep the swage in the plane of the saw when in use. These screws lit very tightly in the plate B to keep them in place, for when once properly set they will not require to be changed, unless some peculiar set or pitch is required to be given to the saw-tooth.

In using the device the stud E is placed on top of the sawtooth as a guide to enter it into the desired notch a. At the same time the three, screws F G H are pressed to the sawplate and the swage is ready to be struck with a hammer to do its work. Thus the teeth may be spread equally on both sides of the plate of the saw, and all the teeth may he made exactly alike without any special care. Twisting thesaW-plate is obviated and the danger of breaking teeth is lessened. This guide would answer the purpose to some extent if the three screw-points F G H were substituted by fixed points or by a plane.

The stud E might be dispensed with under some circumstances, but its use produces more accurate work.

The swage A is an article of manufacture the band may be softer, and consequently less liable to break. I have adapted my guideplate B to this commercial swage by making a segmentalslot across the face of the said plate concentric with the pivot-bolt 0, thus forming aputh for the band just described to move in while the swage is being set for use.

The commercial swage described requires no alteration, except the drilling of two holes for the bolts 0 and D to adapt itto receive my guideplate.

\Vhat I claim as my invention, and desire'to secure by Letters Patent, is

I. The combination of the swage A, provided with notches a in one end and a band around the said end, the side plate, 13, provided with gage-points F G H, the pivot screw 0, passing through the swage into the said plate, and the binding-screw D, the plate B having a segmental groove across its face concentric with the bolt 0 and in the path of 0 a saw, as described, and with a curved slot, 5

c, and the stud E, secured to the plate B, of the swage A, provided with notches a, and the bolts 0 and D, as shown and described.

, WILLIAM G. B. HUMMEL.

Witnesses:

L. O. DEY,

GEO. G. BowYnn, O. W. Mrnns. 

